Signal converter



FIG. 1 is a front view showing our new design for a signal converter;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a right side elevational view thereof, the left side elevational view being a mirror image;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a perspective view thereof. 

The ornamental design for a signal converter, as shown and described. 